Improvement in middlings-purifiers



4 Sheets--Sheet l.

l. H. DEDRICK. Mi'ddlings Puier's.

Patented August 26, 1873.

ssheets--shetz y l. H. DEDRIGK.

Middlings PurHers.V

Patented August 26,` 1873.

WITNEBSES vLrSheets--Shevet 3.

1. H. Denman. Middlings Purinfers.

Patented August 26, 1873.

NVENTHW j /g/AQMJ i@ @f2/LAM NITEE f'rErEs TENT STEVENS St CO., vOF SAME PLACE.

IMPROVEMENT lN Nl-IDDLINGS-PURIFIERS.

l Specification forming part of Letters Patent No. 142,086, dated August 26, 1873; application iled May 13, 1873.

To all whom it may concern:

State of Wisconsin, have invented certain new and useful Improvements in MiddlingsPuri- Tiers, of which improvements the following is a full, clear, and exact description, which will enable others skilled in the art to which my invention appertains to make and use the same, reference bein ghad to the accompanying drawing forming a part of this specification, and in Figure 1 is a front elevation of my improved apparatus; Fig. 2, a top or plan view thereof; Fig. 3, a side elevation of the same; Fig. 4, a rear elevation; Fig. 5, a front elevation, the front wall and driving-gear being removed; Fig. 6, a rear elevation, the rear wall being removed 5 Fig. 7, a vertical cross-section 5 and. Fig. 8, a vertical longitudinal section of the same.

Like letters of referenceindicate like parts.

The object of my invention is to improve the means heretofore employed for the purpose of removing from the middlings those particles which tend to render the flour impure; and to that end it`consists incertain novel features, hereinafter particularly described and set forth, relating to the construction and arrangement of the various parts of the purifier.

In the drawing, A representsthe wall or case Vof the apparatus, which is made sufficiently tight, when closed, to operate, in connection with a sucker orblower, in the manner hereinafter particularly described. B is the drivingshaft, to which motion may be communicated in any suitable manner. G is a beveled gear-wheel, rigidly attached to the shaft B. D is a beveled pinion, engaging the wheel C; and B' is an auxiliary driving-shaft, to which itis rigidly attached. D' and D" are beveled wheels, also rigidly attached to the sha-ft VB'. C' and C" are also beveled gearwheels, one of which is engaged by the wheel D', and the other by the wheel D". E is an v ordinary sucker, the induction of `which enters the apparatus, as shown at e, Fig. 8. The eduction of the sucker is external to the ease A, as .shown at e', Fig. 1. lF is the drivingwheel of the sucker; and F' is a belt-wheel, Be it known that I, JOHN H. DEnRrcK, of y Milwaukee, in the county of Milwaukee and` rigidly attached to the shaft B'. F" is a belt, arranged .on the wheels F and F', for the purpose of driving thesucker or blower. G G are doors in the side of the case A for the purpose of access to its interior, and H H are doors for the purpose of admitting air thereto. I is a shaft, and I' is an arm, by means of which it is rotated. J J are removable pins, arranged to engage the arm I', and prevent its movement after the shaft I and its attachments are properly set or adjusted. G' is a removable piece, to admit of access to parts arranged inthe rear end of case; and this piece may be provided with an opening, covered by a glass, as represented at G", so that the operation ofthe apparatus may be readily observed. K is a feed-trough.

I deem it preferable to make the case A of a suitable frame, and of walls made in readilyremovable sections, as is clearly shown in Fig. 1, so that the mechanism within the frame may be readily examined and repaired without being removed, and so that it may be readily removed for that purpose when necessary.

L is the bolting-reel. M M' is the front head of the reel L. The part M is an annular piece,

and the part M' is a disk, equal in diameter to the part M. The peripheries of the parts M M' are rigidly attached, by means of-the circular part m, so that a considerable space will exist between the parts M and M'. The part M is sufficientlyr broad to form a channel of considerable depth between it and the part M', as shown. O is a hub or sleeve looselv mounted on the shaft I, and rigidly attached to the part M' and to the wheel U'. n n are inclined and bottomless buckets, projecting outward from and. attached to and extending through the part M', and so constructed and arranged that, during the rotation of the reel L in' the proper direction, they will pick up the middlin gs deposited by the trough K into the channel between the parts M and M', and

dump them upon'the bolting-cloths, hereinafter described. P is the rear head of the reel L, and I" is its hub, loosely mounted upon the EEIcE.A

shaft I. Q Q are the reel-bars, rigidly attached v to the head of the reel. Q' Q' are the boltingcloths, attached to the under side of each bar Q, and to the upper' side of each succeeding bar, as shown, so that the cloths will be inclined. The head P is cut away, as shown at p p, Figs. 6 and 7 and is provided with an annular flange, p', projecting inwardly, as shown in Fig. 8. It is also provided with the discharging-buckets p p, also constructed and arranged to collect the material remaining on the halting-cloths, and discharge it through the head P during the operation of the reel. Ihe reel L is prevented from moving laterally on the shaft l by means of the collar lt, which is attached to the shaft I by means of the setscrew lr, so as to be readily removable and adjustable. R is a pulley or belt-wheel rigidly attached to the hub P. S is an air-chamber rigidly attached to the shaft I. S is a longitudinal opening in the chamber S, and the only opening therein, excepting that the head thereof adjacent to the head P is provided with openin gs corresponding to the openings p p. The open head of the chamber S is also provided with an annular flange, s, projecting outwardly, and arranged to lap the flange p closely, as shown in Fig. 8. T is a frame, arranged in the chamber S and supporting the shaft Tf, to which the belt-wheels R and U are rigidly attached. Vis an ordinary conveyer arranged in a channel in the chamber S, as shown in Figs. 7 and 8, and V is a belt arranged over a pulley on the conveyer or shaft, and over the wheel U. The belt V is provided with elevator-buckets o; and V is a belt arranged over the wheels R and lt. W is a spout attached to the frame T, and arranged to receive the contents of the buckets u o and conveying it through the openin gs p. The buckets o c are arranged to pick up any matter that .may be deposited in the channel in which the conveyer V is arranged, and this con veyer is construct-ed to carry such material to the said buckets. A is a scmicircular shield, arranged below the reel L, and provided with longitudinal openings a a. The

shield A extends from the doors H in one side of the apparatus to the doors H in the other side, as shown in Fig. 7. B is a slotted slide, so constructed and arranged that the openings a a may be alternately opened and closed by moving the slide B for that purpose. In Fig. 3 three doors, H H, are shown on each side of the case A, and I make a corresponding series of openings, c a, and slides, B. E is a cant-board, provided with vertical 'partitions E, by means of which each series of openings c a is separated from the laterallyadjacent series. All communication between the doors H H and that part of the apparatus which lies above the shield Af is shut oif, as nearly as possible, except through the openings ct c. H is an ordinary conveyer, to the shaft of which the wheel C is rigidly attached; and this conveyer is constructed and arranged to carry away all the material which may be l conducted to it by means of the cant-board E.

a is an opening in that part of the cant-board which is external to the head P, and b is inclined tloor for the purpose of 4oorulucting to the opening a all matters discharged by the buckets p and the trough W. g gf are scrapers for the purpose of pushing the matter on the door b toward the opening a.

1t will'be perceived from the foregoing description that the sucker E, reel L and its attachments, elevators c fu, conveyer V, and conveyer H are set in motion simultaneously, and that the opening S may be readily adjusted to any section ofthe shield A.

When the apparatus or purifier is operated the current of air enters any one or more of n the doors H H, passes through corresponding openings a a., through the bolting-screen into the chamber S, out through its open head, and through the openings p p into the induction e, and thence out through the eduction e.

The anges p and s, by being arranged as closely together as may be, in the manner described, wthout creating undue friction, out off all draft, except as above specified, thus rendering the operation ofthe machine effectual for the purposes intended.

When the middlings are poured into the trough K they fall into the channel between the parts M M of the forward head of the bolting-reel, and are picked'up by the buckets n n as the reel L rotates. As the buckets a n move upward they discharge their contents upon the inner side of the bolting-screens. The rotary motion of the reel L causes the middlings deposited upon the bolting-cloths to slide and fall from one section of the same to another. While the middlin gs are thus moving on the bolting cloth or screen, and passing through it, they are met by the current of air, which passes through the apparatus in the manner described; and the current may be regulated by means of the adjustable opening S', slides B', and doors H H, so as to strike the bolting-screen at a point where the strongest current is required. The lighter particles of the middlings are then separated from the heavier particles and carried out with the current of air. Those particles which enter the chamber S, and are too heavy to be carried out through the sucker, lodge in the said chamber, and are so prevented from returning to the bolting-cloth and mingling with the middlin gs deposited thereon. These particles, which remain in the chamber S, are carried by the con- 'veyer Vto the elevator-buckets o @and dumped by the latter into the trough W, and delivered upon the floor b; and from the door b they pass through the opening a into any suitable receptacle. The lighter parts remaining on the bolting-cloth move toward the buckets p, and are picked up by them, dumped upon the door b, and pass from the floor b through the opening a, in the manner described. Those parts of the screenings which pass through the bolting-cloth also pass through the openings a a, and fall upon the cant-board E, and are ejected gom the apparatus by means of the conveyer I deem it preferable, in practice, to arrange the sections of the bolting-cloth upon the reel at an inclination of from nineteen to twentyone degrees.

The reel L should be rotated at such a velocity that the bolting-screeu will move from one hundred andseventyave to two-hundred feetpe-r minute, so as to cause the middlings on the screen to move with a continual sliding movement. At a less velocity the middlings would be liable to move and fall in a mass, and on that account they would not be properly swept by the blast of air. c

The reel L should be from sevento nine feet in diameter, and the air-chamber and its openings should be arranged as near the boltingcloth on said reel as. can be conveniently worked. The reel L may be of any desired length, nine to twelve feet being sufficient.

Having thus described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The stationary open air-chamber S, attached rigidly to the adjustable shaft I, in combination` with the bolting-reel of a middlings-separator, and with a sucker or blower and openings for the induction and eduction of air to and from the said chamber, substantially as and for the purposes specified.

2. Theopen air-chamber S, provided with the ilange s, and rigidly attached to the adjustableshaft I, in combination with the bolting-reel loosely mounted on said shaft, and provided with the ange p', arranged to lap the an'ge s, substantially as and for the purposes specified.

3. In a middlingspuriier, the air-chamber S, arranged within the bolting-reel, and provided with a conveyer `and with an elevator vided with a channel to receive the middlings from a feeding-trough, and with the open buckets n n and p" p, arranged in the heads of the reel, respectively, to feed the middlings through the forward head to the boltingscreen, and to discharge from the latter, through the rear head, that part of the middlin gs which do not pass through the boltingscreen, substantially' as specified.

4 7. The shield A', arranged below the boltin greel, and provided with one or more series of openings, coa, and slides B', in combination with corresponding doors in the case, substantially as and for the purpose specified.

8. The removable pins J J, arranged in the arc of a circle, in combination with the arm l', attached to the rotary shaft I, as a means of adjusting and locking the -air-chamber S, rigidly attached to the said shaft, substantially as specified.

JOHN H. DEDRIGK.

Witnesses:

N. C. GRLDLEY, E. P. WHALING. 

